Finding a Quarter You need to divide by

Finding a Quarter (¼) You need to divide by 4 to find one quarter. Count the number of bones.

Finding a Quarter (¼) There are 8 bones. Divide the bones between the four dogs so that they have the same number each. How many bones does each dog have?

Finding a Quarter (¼) How many bones does each dog have? So, one quarter of 8 is 2. Each dog has 2 bones. ¼ of 8 = 2

Which Strategies Can I Use to Find One Quarter (¼)? There are twelve cakes. I share them equally between four friends. How many cakes does each friend get? What is ¼ of 12?

Draw Groups Share the cakes equally into four groups. ¼ of 12 = 3

Halve and Halve Again Find half What is ½ of 12? 12 ÷ 2 = 6 What is ½ of 6? 6÷ 2=3 Find half again Answer: ¼ of 12 = 3

Use the Inverse Multiplication is the inverse of division. 12 ÷ 4 = × 4 = 12 3 + 3 + 3 = 12 3 × 4 = 12

Problem Solving Now, choose a strategy to solve these problems. What is ¼ of 4? ¼ of 4 = 1 What is ¼ of 16? ¼ of 16 = 4 What is ¼ of 20? ¼ of 20 = 5 Which strategy did you use? Discuss.

Problem Solving Lexi had 20 grapes. She gave a quarter of them to Sam. How many did Sam get? ¼Answer of 20 = 5 Which strategy did you use? Discuss.

Problem Solving Miss Jones had 24 stickers. She shared them equally with four children. How many stickers did each child get? ¼Answer of 24 = 6 Which strategy did you use? Discuss.

Problem Solving Rishi had 40 cars. ¼ of the cars were red. How many cars were red? ¼ Answer of 40 = 10 Which strategy did you use? Discuss.

Challenge Section If you have found it easy to find one quarter, try these next few challenges!

Finding Three Quarters (¾) You know how to find one quarter so now let’s look at finding three quarters. First, find ¼. There are 8 eggs. If we divide these eggs between 4 baskets, how many eggs will be in each basket?

Finding Three Quarters (¾) There will be 2 eggs in each basket because ¼ of 8 = 2 To find three quarters, simply count the total number of eggs in 3 of the baskets. There are 6 eggs in the 3 baskets, so ¾ of 8 = 6.

Problem Solving What is ¾ of 4? What is ¾ of 12? What is ¾ of 16? ¼ of 4 = 1 1× 3=3 so ¾ of 4 = 3 ¼ of 12 = 3 3× 3=9 so ¾ of 12 = 9 ¼ of 16 = 4 4 × 3 = 12 so ¾ of 16 = 12

Problem Solving Sami had 20 marbles. He gave three quarters of them to Sam. How many did Sam get? ¼ of 20 = 5 5 × 3 = 15 ¾ of 20 = 15